ASTROSAT CZTI

Data Quality Report

Orbit 11767

Creation date: 2024-06-27T16:18:01.440300
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_231T01_9000001740_11767cztM0_level2.evt modeM0/AS1A04_231T01_9000001740_11767cztM0_level2_quad_clean.evt
Size (bytes)509,814,720106,300,800
Size486.2 MB 101.4 MB
Events in quadrant A3,793,932681,051
Events in quadrant B4,141,751708,739
Events in quadrant C3,105,103716,121
Events in quadrant D3,965,353667,464

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154303
B0165392
C0132172
D0158712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63851552.427565%
B63851822.850431%
C6385150.234926%
D6385921.440877%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7721 6387 26 26 0.34% 0.41%
B 7721 6387 83 83 1.07% 1.30%
C 7721 6387 0 0 0.00% 0.00%
D 7721 6387 69 69 0.89% 1.08%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 15 293979 1874.37 778 762 156.4
A 1 162 125072 794.64 778 762 156.4
A 5 16 93983 595.91 778 762 156.4
B 4 239 429408 2938.08 794 775 145.9
B 10 16 284873 1947.36 794 775 145.9
B 15 204 159294 1086.57 794 775 145.9
C 8 222 7759 38.73 794 798 179.7
C 13 61 5856 28.14 794 798 179.7
C 12 4 2188 7.73 794 798 179.7
D 1 52 628162 3430.78 775 755 182.9
D 8 195 143064 778.17 775 755 182.9
D 13 104 120417 654.33 775 755 182.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter